Jeffrey Kenneth Klingenstein, MD
NPI 1215948310ActiveIndividual· Internal Medicine, Gastroenterology· Astoria, NY
Internal Medicine, Gastroenterology (MD) in Astoria, New York, trained at Boston University School of Medicine (class of 1975). Their prescriptions cost Medicare Part D more than their services did: $463,201 for 2,570 claims, against $49,363 paid for services in 2024. Salix Pharmaceuticals, A Division of Bausch Health US, LLC was the largest of 15 companies reporting payments in 2025, $929.79 in all, mostly food and beverage.
Overview
| NPI | 1215948310 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Aug 11, 2006 |
| Last updated in NPPES | Aug 26, 2019 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 134287 | NY |
| Internal Medicine | 207R00000X | 134287 | NY |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Gastroenterology (NY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 166 |
|---|---|
| Services billed | 626 across 16 procedure codes |
| Paid by Medicare | $49,363 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,570 · 5,205 30-day fills |
|---|---|
| Patients | 358 |
| Total drug cost | $463,201 |
| Generic share | 83% of claims |
Education and affiliations
| Medical school | Boston University School of Medicine |
|---|---|
| Graduation year | 1975 |
| Medicare specialty | Gastroenterology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Greater New York Gastroenterology LLPRego Park, NY · 5 clinicians
Industry payments (Open Payments)
- 2025$929.79 · 55 payments from 15 companies
- 2024$954.97 · 51 payments from 9 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | $179.72 | 13 |
| Madrigal Pharmaceuticals | $140.56 | 13 |
| Novo Nordisk Inc | $110.88 | 5 |
| Janssen Biotech, Inc. | $98.49 | 4 |
| Anx Robotica Corp | $75.48 | 1 |
What the 2025 payments were for
- Food and Beverage$929.79 · 55 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 17 gastroenterologists in Astoria · All gastroenterologists in New York